About Epractice Lab's mock exam3 , question 19

[Himai Minh]

Question 19 of EPractice Lab mock exam 3:

@EJB MyBean a;
@EJB MyBean2 b;
Assume that MyBean and MyBean2 are singleton session beans with no interface.
Which statements are true?
a: b.equals(a) must return false;
b: a.equals(b) must return false;
c: b.equals(a) must return true;
d. a.equals(b) must return true;

The model answer provided by EPractice Lab is option c and d.
But I think it should be a and b because MyBean and MyBean2 are referring to two different singleton beans with no-interface views.